Lifting and driving propeller.



'R. STREHLAU.

LIFTING AND DRIVING PROIELLER.

APPLICATION FILED APR. 21.1909.

Patented Sept. 28, 1909.

2 SHEETS-SHEET 1 R. STREHLAU.

LIFTING AND DRIVING PROPELLER.

APPLICATION FILED APR. 21.1909.

935 1Q Patented Sept. 28, 109..

2 SHEETS-SHEET 2.

ROBERT STREHLAU, QB WESTEND, NEAR BERLIN, GERMANY.

LIFTING AND DRIVING PBOPELLER.

specification of Letters ltatent.

Patented. Sept. 28, 1982.

Application filed'april 21, 1959. Serial No. 491,394.

To all whom it mag concern:

Be it known that 1, ROBERT STREHLAU, a

subject of the German Emperor, and resid-.

ing at Westend, near Berlin, Germany, have invented certain new and useful Improved Lifting and Driving Propellers, of which the following is a specification.

The subject-matter of my invention is animproved device for imparting an upwardly and forwardly impelling force to vehicles of all kinds.

In order to be able to impart to vehicles:

the device being used as a flying machine,

of all kinds, whether these are to move in the air, on water or one firm foundation, for example on rails, snow, ice or directly on the ground, an upwardly or downwardly impelling force and a forward and backward connected rods 12, on which again the cranks motion as desired, according to my invention I employ a device in which wings driven by a motor are moved in a definite manner in the air and the forces acting in various directions are utillzed for movmg the vehiclesv One or more palrs of correspondingly. wings, which preferably comprise frames carrying canvass stretched thereon, are arranged singly, or several superposed, sym metrically, relatively to a vertical central plane through the device, as in a bird floating in the air, and the motor imparts to them a double movement, namely an upwardly and downwardly directed parallel movement and a rocking motion in the direction of travel. The wings are preferably moved upwardly and downwardly by connecting the wing-frames to the pins ofcranks whose axes are horizontal in the normal position ofthe device and which rotate in opposite directions on the two sides of a supposed central plane. The wings are preferably rocked in the direction of travel by causing both the wing-frames which can rock round an axle and with them the wings to be tilted with their front edges downward every time they move downward and with their frc'nt edges upward every time they move upward.

In order that my inveiition may be clearly understood I will now describe the same with reference to the accompanying draw- A ings in which. ome embodiments are represented by way of example.

In saiddrawings :Figure 1 is a front elvation of the devi e, Ihig. 2 is a top plan view, and Fig. 3 a vertical section 1nthe plane iLB in Fig. 2, Figs. 4 and 5 are details of parts of modified forms, whereas to rock round pivots 9.

F 6, 7 and 8 are side elevations of part of the device on an enlarged scale showing the principal positions of the wing-frame which is adjustable in the direction of travel to different angles, and Fig. 9 is a front ele- 2, 3 and 4, which carries wheels 5 and parachute-like surfaces 6 and 7 in the event of thereis provided on the rods 1 a suspension device 8, onwhich a frame 10, 11 is mounted. As clearly shown in Fig.2, with the rods 11 there are rigidly 13 for the Wings 14- are journaled. The

crank-shafts carry bevel wheels 15 which to gether wita the counter-shafts 16 are driven by means of sprocket wheels 17 18 by the motor 19 and, as indicated by curved arrows in Fig. 1, drive the wings parallelly in opposite directions upwardly and downwardly. I

In Fig. 4 a triple wing 14 and in Fig. 5

a single wing 14 is shown instead of double wings 14- as in Fig. .1 on each side of the" .device.

In order to move-the pairs of wings not only parallelly upwardly and downwardly,

but'also to tilt them in the direction of travel, a device is provided which sets the wing-framelO, 11 at the desired inclination. For this purpose two rods 22 are pivotally connected at their ends with the frame menibers 2 and a pair of rotatable disks 24.

Preferably said rods arejeach made in two sections connected by a turn-buckle 21 by means of which the length of the rods may be slightly varied. The said rods are adjustably connected with the disks 24, the latter each being provided with a screw rod 25 on which is mounteda block or sleeve 23 to which the adjacent section of the rod 22 is conneeted. v l.

Means are provided for turning the spindles or screw rods 25 to adjust the sleeves or blocks 23 radially of the disk, such means end of thespindle and alever fulcrumed on the inner frame and having two dogs or teeth 27, 27. As shown particularly in Figs. (Sand 9 the said lever is supported by two ears 2 7 loosely surrounding the lower bar of the inner frame, and between which Y including a toothed wheel 26 secured to one eeaiso ape rtcnt that when ti lever is in vertical position, or shown in Figs. 6 and 9, the toothed wheel 26 will pass freely between them the disk 24% is rotated; When however it is desired to adjust the sleeve or block 23 on said disk the lever is rocked to cause, one of the other dogs 27, 2 a to engage the toothed" whcel 26, and thereby turn the shaft or spindle 25. It will be evident that the direction of the movement of said spindle and sleeve or block 23 will depend upon which of'the dogsQ'Z, 27 is caused to engage the wheel 26. The disl-crank 24: is driven by sprocket-wheels 28 and 30 and chain 29 from one of the counter-shafts 16, as clearly shown. 0

Bymeans of the connecting rods 22, the frame 10, 11 and with it the wings are rocked, simultaneously as the latter are moved upwardly and downwardly In the highestposition ofthe wings as shown in Fig. 6 they are horizontal, in the half-way position when moving downward they are tilted according to Fig. 7, in their lowest position they are horizontal again as shown in dotted lines in Fig. 6,:1nd in the halfway position when n'loving upward they are tilted according to Fig. 8. The straight arrows indicate the direction. of travel. The move inents of the wings are repeated in like manner. upwardly and a forwardly impell'ing force act simultaneously on the device.

If it is wished to use the device for vehicles adapted to travel on water or land,

it is only necessary to connect them in suitable manner with the device.

I claim Y p 1. In adevice for imparting an and forwardly impelling force to up 'ardly vehicles of all kinds, the combination, with a frame, of

wings mounted. movably thereon arranged symmetrically with regard to the center thereof, a SOUI'CQ Of POWGL',111GBJ1$ driven from the latter for driving thewings parallelly upwardly and downwardly, and means driven by the source of power for. simultaneously rocking the wings during their upward and downward motion.

2. In a device for imparting an upwardly and forwardly impellingforce to vehicles of all kinds, the combination, with a. frame, of wings mounted movably thereon arranged symmetrically with regard to the center thereof, a source of power, means driven from the latter for driving the wings parallelly in opposite horizontal directions upwardly and downwardly,and means driven by the source of power for simultaneously rocking the wings during their upward and downward motion.

3. In a device for imparting an upwardly and forwardly impelling force to vehicles of ll kinds, the com bination, with a frame, of

1?. 'lhe latter Owing to this double movement an symmetrically with regard to the center thereof, a source of power, means driven from the latter for positively driving the Wings parallelly upwardly and downwardly, and means driven by the source of power for simultaneously positively rocking the wings during their upward and downward motion.

4. In a? device for imparting an upwardly and forwardly impelling force to vehicles of all kinds, the combination, with a frame, of an inner frame pivotally suspended therefrom, cranks journaled on the inner frame, wings-carried by said cranks and arranged symmetricallywith regard to the center of the/former "rams, a motor carried by the inner frame, and gearing, substantially'as shown, driven by said motor for. rotating said cranks and driving said wings parallelly in opposite horizontal directions upwardly and downwardly 5. In a device for imparting an upwardly and forwardly impelling' force to vehicles of all kinds, the combination, with a frame, of an inner frame pivotally suspended there from, cranks journaled on the inner frame, wings carried by said cranks and arranged symmetrically with regard to the center of the former frame, a motor carried by the inner frame, gearing, substantially as shown,

and driving said wings parallc ly in opposite horizontal directions. upwardly and downwardly, and crankoperated means driven by said motor for simultaneously rocking said wings during their upward and downward movement. l

6. In a device for imparting'an upwardly and forwardly impelling force to vehicles of all'kinds, the combination with a frame, of an inncrframe pivotally suspended therefrom, cranks journaled on the inner frame, wings carried by said cranks and arranged symmetrically with regard to the center of the former .rame, a'motor carried by the inner frame, gearing, substantially as shown,

drivenby said motor for rotating said cranks and driving said wings parallelly in opposite horizontal directions upwardly and downwardly, and adjustable crank-operated means, substantially as shown,'driven by said motor for sinmltancously rocking said wings during their upward and downward movement.

i 7. In a device for imparting an upwardly and forwardly impelling force to vehicles of all kinds, the combination, with a frame, of an inner frame pivotally suspended therefron'i, cranks journaled on the inner frame, wings carried by said cranks and arranged symmetrically with regard to the center of the former frame, a motor carried by the inner frame, gearing, substantially as shown, driven by said motor for rotating said cranks and driving said wings parallelly in oppodriven by said motor for rotating said cranks v site horizontal directions upwardly and comprising adisk, a Screwed spindle jonrnaled thereon, a crank pin movable on said spindle; a connecting-rod connected with the former frame and said pin, a toothed wheel on said spindle outside said disk, and a two 30 armed lever fulcrumed on said inner frame adapted to engage with-said wheel.

.10. In a device for imparting an upwardly and forwardly impelling force to vehicles of all kinds, the combination, with a frame, of 35 an inner frame pivotally su's ended therefrom, cranks journaled on sai inner frame, double wings carried'by said cranks, a motor carried by said inner frame, and gearing downwardly, adjustable crank operated means, substantially as shown, driven by said motor for'simultaneously rocking said Wings during their upward and downward movement, and means for varying the operation of said crank-operated means.

8. In a device for imparting an upwardly and forwardly impelling force tovehiclesof all kinds, the combination, with a frame, ofan inner frame pivotally suspended therefrom, a motor carried by said inner frame, a disk crank journaled in said inner frame and driven by said motor; said disk crank comprising a disk, a screwed spindle journaled thereon, a crank pin movable on said spindle; and a connecting-rod connected with the former frame and said pin.

9'. In a device for imparting an upwardly and forwardly impelling force to vehicles of all kinds, the combination, with a frame, of an inner frame pivotally suspended therefrom, a motor carried by said inner frame, a disk crank journaled in said inner frame and driven by said motor; said disk crank driving said Wings parallelly in opposite horizontal directions upwardly and down= wardly.v

In testimony whereof, I afiix my signature in the presence of two witnesses.

ROBERT STREHLAU.

Witnesses: I

HENRY HASPER, WOLDEMAR HAUPT.

connecting the motor with said cranks and 40 

